High Volume Oiling system

There are several high volume pumps made by aftermarket companies such as Kitaco, Takegawa, Daytona and some smaller European companies.  They are rated in flow as compared to a stock 50cc pump, like 200% or 280% which would mean more than twice the flow of a stock 50cc pump. Some of these pumps require modification to install, such as a small amount of grinding on the pump inlet and outlet areas or drilling out the top end oil supply jet to a larger size. Some time when replacing a 50cc pump with a high volume pump a new oil pump drive shaft will be required, it is often included with the new pump. On the higher output pumps the manufacturer may recommend drilling out the top end oil supply jet to 2mm.

	Here we see the assembled Kitaco 300% oil pump for a 6v motor. In this particular case a new shaft is not required. A new shaft IS required if you plan on increasing the stroke of the crankshaft.
	Here are the various parts of the disassembled pump. Very high quality parts from Kitaco. This pump is available from many sources, I bought this particular pump from Mini-4-Stroke  cost was about $45 US Kitaco Part # 331-1013400
	Here are the parts that really do the pumping. These are the rotor parts. Note how much thicker they are than the rotors for either the standard 50cc engine oil pump, or the standard 72cc pump shown on the previous page.   This rotor measures .344" (8.75mm) thick, that's more than twice as thick as a standard 72cc engine oil pump. A high volume pump such as this should be installed on any machine that is raced on a regular basis. We have raced several seasons with a standard pump from a 72cc engine and have had no problems so far. But I will be installing this pump for that extra bit of protection.